Any bacteria do not cause psoriasis. No virus or fungus causes it. It is not a contagious disease. There is nothing but body that decides if you will get psoriasis or not. A gene is responsible for psoriasis. Those who have that gene may get psoriasis if it is triggered.
Psoriasis – common triggers
The common triggers of psoriasis are sunburn, stress, skin injury, some medications, infections, smoking, drinking, and change in weather. Any of these can trigger psoriasis in a person who has the faulty gene. The gene makes skin act abnormally. Again it is not necessary that every time the triggers will work. Sometimes they don’t while sometimes a small trigger flares up psoriasis. Talking about the gene, not all siblings get psoriasis. It can be hereditary many times. As we discussed, for getting psoriasis you need a faulty gene and a trigger. Many healthy persons who show no sign of psoriasis sometimes get a small injury and the skin does not heal. After some days, the doctors find out that the person has psoriasis, which is not allowing the skin to heal. The strange behavior of skin at certain places on the body is responsible for psoriasis. Skin...